Whirl fire oil burner



' 1932- o. FALKENWALDE ET AL 1,891,877

WHIRL FIRE OIL BURNER Filed May 9, 1929 4 Sheets-Sheet l gwuwntoqs 0. faz/reflh aide, BE -Lyon.

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WHIRL FIRE on. BURNER I Filed May 9, 1929 4 Sheets-Sheet 4 Zlmentow a IkZ/fenwalde; RH L an,

Patented Dec. 20, 1932 UNITED STATES PATENT OFFICE WHIRL FIRE OIL BURNER Application filed May 9, 1929. Serial No. 361,808.

This invention relates to an oil burner.

It is generally aimed to provide an exceedingly compact, relatively inexpensive and simple construction of burner attaining all of the advantages of the device disclosed in our pending application 251,320 filed February 2, 1928, for improved oil burners and control mechanisms therefor, and which is an improvement over the oil burner of said application.

' It is a prime object of the present construction to provide means whereby the product obtained from the evaporation of moisture for combustion, as well as air and fuel will be in whirling motion when admixing and ignited, to the end that maximum heat may be attained and the operation of the burner will not produce smoke carbon or odor.

Another important object is to provide a construction wherein a relatively low air duct and one which will impart a whirling motion to the supplied air, supplant the relatively large air duct used in the application aforesaid.

A further object is to provide a novel construction wherein the fuel nozzle supports an element having means for causing whirling motion of the fuel and products produced by the evaporation of moisture, and which element coacts with parts so as to serve as a relief valve in case of excessive pressure.

A further object of importance is to provide a novel construction for supporting the various parts on the air chute, which parts are novel sections and separable so as to be readily removed and replaced.

The more specific objects and advantages will become apparent from a consideration of the description following taken in connection with accompanying drawings illustrating an operative embodiment.

In said drawings Figure 1 is a plan view of the complete oil burner,

Figure 2 is a longitudinal vertical sectional view through the oil burner taken on the line 22 of Figure 1,

Figure 3 is an enlarged vertical sectional view taken through the burner on the plane 5% of line 33 of Figure 2,

Figure 4 is a sectional view taken on the line 44 of Figure 3, V

Figure 5 is a detail sectional View taken on the line 55 of Figure 2,

Figure 6 is a plan view of the base plate,

Figure 7 is an inverted plan view of one of the air duct sections,

Figure 8 is an end view of one of the air duct sections,

Figure 9 is a top view of the mixer, and

Figure 10 is an inverted plan view of the mixer.

Referring specifically to the drawings, 10 designates a metallic air chute adapted to be positioned within a furnace, for instance, like the air chute shown in our pending application aforesaid, the air chute having the desired number of supporting feet 11 fastened thereto. At the lower or outer end of the air chute 10, an electric or other type of force draft blower generally designated 12 is disposed, as in the aforesaid application, to force air into the chute 10 and discharge it at the upper end which is flared as at 13.

A base plate 14 removably rests on the upper surface of the flared portion 13 having an integral retaining flange 15 depending from the base plate and surrounding said flared portion. Base plate 14 is arranged in one piece and has a hub 16 through which a fuel pipe 17 removably passes. Said fuel pipe extends above the hub 16 and a conical nozzle 18 is removably screw threaded thereto at 19, packing of asbestos as at 20 preferably being interposed between the top of the hub 16 and adjacent faces of the nozzle 18. The nozzle has an outlet opening 21 in line with the bore of the pipe 17.

About the nozzle 18, base plate 14 has a depression constituting a starting pan 22 and through the wall of which, above its base, a multiplicity of air inlet ports 23 are provided.

The starting pan 22 merges into an annular arched portion or wall 24 through which a multiplicity of air ports 25 are provided, adjacent the margin of the base plate.

Removably superposed on the base plate 24 is a crown 26 which is retained in place by a flange 27 integral with base plate 14 and forming an upward continuation of the flange 15. Crown 26 is preferably made in a plurality of sections for instance four, each designated 28 as best shown collectively in Figure 1 and one of which is detailed in inverted plan in Figure 7. As best shown in Figures 3 and 5, the main wall of the crown is raised with respect to the wall 24 and is spaced therefrom, so that passageways 29 are provided from the openings so that while in whirling motion it will reach the nozzle 18. Lugs 31 are formed integral with the base plate 14 and are adapted to engage recesses 32 in the sections 28 to aid in positioning the latter.

Crown 26 is centrally open asat 33 and disposed thereat is a mixing shell 34. Shell 34 has a plurality of vanes 35 located within the same whose inner edges are reversely inclined at 36 and 37 respectively. The edges 36 contact with the nozzle 18 and is thereby removably supported on such nozzle. The vanes 35 are each inclined to the vertical so that fuel emerging from the nozzle will strike the same and have a whirling motion accordingly imparted thereto. As will later be described, the products from the evaporation of moisture will likewise strike the vanes 35 and have a whirling motion imparted thereto. As a result, air fuel and such product will all be in whirling motion when they admix at the burner and are ignited by the flame therefrom, and the flame will also be given a whirling and expanding motion.

A generator is provided at 40 and its purpose is to supply the fuel mixture at the nozzle with the products from the evaporation of moisture to insure complete combustion of the fuel. This device comprises a. conical spreader 41 arranged in an upright position within the mixing shell 34 engaging the inclined edges 37 of vanes 35. A supply tube 42 is fastened to the spreader 41 and extends removably and slidably through an opening 43 in a hood 44 which is removably seated at 45 on the mixer 34, closing the latter from above but being capable of yielding from said seat 45 in case of excessive pressure to relieve the device thereof. A washer 46 loosely surroundstube 42 and bears against the adjacent surface of the hood 44 and below the same, asbestos packing 47 surrounds the tube. .Below packing 47, a deflector 48 loosely surrounds the tube, at its lower end overlapping the deflector 41 and being flared outwardly therefrom and from openings 49 through the same which communicate by means of openings 50 with the interior of the tube 42. Asbestos packing 52 surrounds the tube 42 between the spreader 41 and adjacent wall of the deflector 48.

The generator 40 further comprises a vertical cylinder 53 and horizontal cylinders 54 radiate from the former and communicate therewith at the inner ends, the outer ends being closed by caps 55. A bushing 56 rests on the hood 44 and has screw threaded engagement at 57 with the cylinder 53. A tube 58 at 'its lower end is screw threaded into the bushing and at its upper end is covered by a cap .59 screw threaded'thereto. .BfilOw the cap the tube 58 has inlet ports 60 and within the tube is a tube of smaller diameter 61 .0 en the top and carried by the tube 42.. Water i pp i d'p f rab y drophy drop through a pipe 62 fastened to the cylinder 53. Such pipe 62 corresponds to the pipe 48 in our a o esaid pend ng appli atio and is a ranged in communication with the same mechanism for the supply .of water asin said app a n The lower p rt of. h cylind r 53 about h t be .58 o stitutes a Wate trap- VVithin a shorttime after the starting of the burner the upper portion of the air tluct 1.0, nozzle, base plate 1.4, crown26, mixer and ll parts a ove he s me are h ate toa vcherry red with the result that the oil issuing from the nozzle is vaporized and the air passing through the casting 10 is heated to high degree and the water supplied through pipe 62 upon striking cap 59 is converted into s ams p ev o sly o l ne s ch air, fue and product are in whirlingmotion when they admin andignite at the burner and the same whirling motion is imparted v to the .fl im V Y Y i A in u o es id app cation, a drip c.01- 1 3 s rr nged below he star ing pan and fastened to the p iPB .7, the fuel pp o the l t e from any esired s urce as through a pipe 64'extending to the-exterior of the air chute 10. Also'like in said pending application, a conduit 65 may drain oil from the receptacle 63 back to the source of supply and a strainer 66 may be arranged at the inlet of the conduit 65,

Variouschanges may be resorted to provided they fall within the spirit and scope of the inVGIltiOn. Y

We claim as our invention i 1. An oil burner construction having a base plateprovided with a central fuel nozzle, a mixer into which said nozzle extends, means within the mixer to impart a whirling motion to the fuel, a crown plate on said base plate terminating in spaced relation to. the mixer, means to supply air through the base plate and intermediate the latter and crown plate to the mixer, and depending vanes on the crown plate serving to impart a whirling motion to the air.

2. A burner construction comprising a base plate having an arched portion provided with perforations for the passage of air therethrough, a burner bowl surrounded by the arched portion, an upwardly extending fuel nozzle therein, a crown having integral de pending vanes resting on the arched portion, said vanes providing passages in communication with said perforations and the space ad- .jacent said nozzle whereby air may reach the nozzle, said vanes having their under surfaces restin on and conforming in shape to the arched portion, said vanes being positioned to impart a whirling motion to the air, a mixer mounted on the nozzle and having inwardly extending vanes with inclined edges, one set of said edges resting on the nozzle, and means above the mixer operative to evaporate water and supply the product to the mixer.

In testimony whereof we aflix our signatures.

OSCAR FALKENWALDE. ROBERT H. LYON. 

